High-tension-switch frame



1929. J. B. TRESCOTT 1,725,228

HIGH TENSION SWITCH FRAME Filed Feb. 18, 1926 2 Sheets-Sheet 1 Aug. 20, 1929. J. B. TRESCOTT HIGH TENSION SWITCH FRAME Filed Feb. 18, 1926 2 Sheets-Sheet 2 Patented Aug. 20, 1929.

UNITED STATES PATENT OFFICE.

JOHN ."B. TRESGOTT, OF ST. LOUIS COUNTY, MISSOURI, ASSIGNOB T0 THA NDEBS ELEC- TRIO COMPANY, OF ST. LOUIS, MISSOURI. A CORPORATION OF MISSOURI.

HIGH-TENSION-SWITCH FRAME.

Application filed February 18, 1926. Serial No. 89,098.

My invention relates to a new and useful improvement in high tension switches and more particularly to a frame work built up of unit members for supporting the switch and its accessories.

The principal object of my invention is to provide a high tension switch that is built of interchangeable units which may be assembled on two cross arms of a pole.

A further object is to so arrange the parts as to obviate the necessity of braces for the cross arms of the poles and braces from the pole to the frame work of the switch.

A still further object is to transmit the weight of the line wire through the frame work in a straight line.

Another object is to provide means on the frame work for attaching the necessary accessories for the desired purpose including switch operating means.

With the foregoing and other objects in view, my invention consists in certain novel features of construction and arrangement of parts hereinafter more fully described and claimed, and illustrated in the accompanying drawings, in which Figure 1 is a perspective view of my improved high tension switch showing the arrangement of parts for the installation of a transformer.

Figure 2 is a perspective view of the bracket around which my switch frame is built.

Figure 3 is an elevational view' of. the pipe and brace connection.

Figure 4.- is a detailed elevational view of the strain insulator and its connection used in the transformer installation illustrated in Figure 1. I I

Figure 5 is a side view of a switch installation and frame work utilized in the tapping of a line.

The numeral 1 in the drawings indicates an ordinary wire supporting pole having cross arms 2 and 3. 4 are substantially'triangular shaped brackets one side of which extends beyond the main body as shown at 5. These brackets are adapted to be positioned on cross arm 2 with the projecting portion 5 extending over the top side of the arm and suitably fastened in place. The top side 6 of bracket 4 is drilled to carry an insulator pin 7 which in turn carries the-stationary member 8 of the switch, and also 'to support the journal box 9 in which insulator in 10 is mounted. Insulator pin 10 carries t e movable switch element 11.

The outer end 14 of bracket 4 is drilled and adapted to carry a suitable fitting to meet the requirement of the installation.

In the hook up shown in Figure 1 which is for the installation'of a transformer or meter in the line it is desirable to provide for the continuation of the line wire. This is accomplished by bolt-ing pipe connections 13 to faces 14 of bracket 5 and fitting sections of pipe 15 to project in the line of the high tension wires 16.

Insulator pins 17 and 18 are mouned on each of the pipe members 15. The usual pantograph'arms 19 are provided to support the cablebetween the rockable insulator pins and insulator pins 17. Fuses 20 are mounted in the gap between insulator pins 17 and 18. Double strain insulators 21 are fixed on the ends of pipe 15.

In all arrangements of the switch frame additional pipe brackets 13 which carry depending pipe members '23 are bolted on the lower faces 22 of the brackets 5. Small brackets 24 are fixed to the cross arm 3 and connected to the depending pipe members 23 by U bolts. This arrangement of the parts forms a solid pole construction by bringing together to brace each other two structures namely: the pole and the switch frame, either of which alone requires substantial bracing.

To make a still more rigid structure, the pipe brackets 13 are provided with lugs 25 in which are openings 26 adapted to carry transverse braces 27 and 28. A set screw 29 is used in this portion of these brackets to form a solid conection with the transverse braces. When the parts are arranged in such a manner that the horizontal pipe member 15 is not required, it is unnecessary to provide a transverse brace at the outer end 14 of the bracket 4 and the parts are as shown in Figure 5.

An alternative form of engagement for the transverse braces is illustrated in Figure 1 in which the 'set screws 29 are omitted and the braces 27 and 28 fixed relative to the brackets 13 by collars 29 This method of fastening is less rigid and consequently less desirable than the preferred form first described.

, Figure 1, I provide a yoke 33 (shown in Fig ure 4) which may be connected to the portion 5 of bracket 4. The yoke 33 is also used to form the connection between pipe members 15 and the double strain insulators 21. This'yoke allows a limited pivotal mo tion of the wire supporting strain insulators and acts to reduce the strain caused by swaying wires.

The circuits shown in the drawings form no part of my present invention but are used to more clearly show the flexibility of use of my improved high tension'switch frame.

In the hook up shown in Figure 1 the circuit arrives at the pole from behind( The wires 16 aresupported by the strain insulators 34.

The circuit passes through buss wires 36 to the switch members 8 and 11, through fuses 20, buss wires 37 to the box 38 where it is measured or transformed. It then passes through buss wire 39 to the outside of the double strain insulator 21 and on through wire 16 which continues inthe same path as the lead in wire.

The hook up shown in Figure 5 is a different, arrangement of the same parts and illustrates the manner of providing for a choke coil 40.

. In the type of pole switches customarily. used it is necessary to have an individual base for each arrangement of accessories. Also a different size base for each arrangement to accommodate 2 and 3 wire circuits. All ofthese frames require diagonal braces for themselves and for the cross arms of the pole.

In my improved switch frame the parts are assembled directly on the poles and the same parts are used for all hook ups,-the only change being in their arrangement. There is no necessity for diagonal braces of any sort and the only duplicate parts needed are the transverse pipe braces which must be of two different lengths to accommodate 2 and 3 wire circuits.

The triangular brackets 4 forming the base of the frame are positioned on the upper cross arm 2 in line with each wire of the circuit to suit the immediate installation. The depending pipe member 23 and its bracket are also necessary parts inv all frames to provide bracing with the lower cross arm 3., The other parts are used or not as the circuit requires.

' claims.

I claim: 1; A high tension switch frame for poles hav ng cross arms comprislng a bracket for each wir of the circuit, a switch mounted on each tfsaid brackets, auxiliary brackets for each of said main brackets, carrying depending and horizontal projecting extensions andtransverse braces carried by said auxiliary brackets.

2. A high tension switch frame for poles having cross arms comprising a bracket for each wire of the circuit, a switch mounted on each of said brackets, auxiliary brackets for eachof said main brackets carrying depending and horizontal projecting extensions, and transverse braces carried by said auxiliary brackets, said switch frame being carried by one cross arm of the pole connected to said main bracket and being braced by a lower cross arm connected to said depending extensions.

In combination with a wire supporting pole having spaced cross arms, a high tension switch frame inciuding'a bracket for each wire of the circuit, means on said bracket for engaging one of said cross arm's, extensions connected tosaid brackets, and adjustable means cooperating with said extensions to form connections with the other of said cross arms. 7 Y

4. In combination with a wire supporting pole having spaced cross arms, a high tension switch frame including a bracket for each wire of the circuit, means on said bracket for engaging one of said cross arms, extensions connected to said brackets, and

adjustable means cooperating with said ex tensions to form connections with the other of said'cross arms, said switch frame and cross arms acting to brace each other and form a rigid .pole construction.

5. A high tension switch frame for a pole having spaced Wire supporting arms including brackets having an arm engaging member, depending extensions on each of said brackets, and vertically adjustable means for fastening said extensions to the other arm.

'6. As a new article of manufacture a unitary high tension switch frame comprising brackets for each wire of a circuit, said brackets being means for supporting a switch, auxiliary brackets adapted to be fastened to said main brackets, said auxiliary brackets being adapted to carry horizontal and depending extensions forsaid brackets, and transverse braces connecting said brackets. v

7 In aunitary high tension switch frame including a substantially triangular bracket for each wire of a circuit adapted to carry a switch on one of its sides, transverse members connecting said brackets, one of which acts as a switch operating rod, and auxiliary brackets on said first mentioned brackets for connecting accessory carrying extensions.

8. In a unitary high tension switch frame a supported line wire, a substantially triangular bracket adapted to carry a switch on one of its sides and an auxiliary bracket on said first mentioned bracket for connecting an accessory carrying extension in alignment with said line wire.

9. In a unitary high tension switch frame a substantially triangular bracket, a projecting lug on said bracket adapted to engage a cross arm of a pole and support a lead in wire, and a removable member attached to said bracket for engaging a transverse brace.

10. In a unitary high tension switch frame a substantially triangular bracket having a projecting lug adapted to engage the cross arm of a pole, and support a line wire, a horizontal projecting member carried by said bracket opposite the said cross arm engaging lug and means on said projecting member to support the continuation of the line wire.

11. In a high tension switch frame a supported line wire, brackets, auxiliary brackets adapted to be fastened to said main brackets and to provide for accessories in alignment with said line wire, and means formed integrally with said auxiliary brackets to carry transverse braces.

12. In a sectional high tension switch frame for poles having spaced cross arms,

a switch supporting unit for each wire of the circuit, said unit having fixed means for connection to one of said spaced cross arms and adjustable means for connection to ansaid brackets for the support of the line wire,

said brackets being mounted on the cross arm of a pole in such a manner that the supported weight of the said line wires is carried directly by the pole cross arm.

15. A unitary high tension switch including a bracket for each line wire of a circuit, a switch mounted on each of said brackets, horizontally projecting members extending from said brackets and adapted to support the line wire in a straight line through the body of said bracket and means for supporting the said brackets and their assembly upon the cross arm of a pole so that the supported weight of the line wire will hold said brackets in an upright position.

In testimony whereof I hereunto aflix my signature this 16th day of February, 1926.

JOHN B. TRESCOTT. 

